Does not work with VR Games

[v0idp]

as the title says it does not support VR Games. no menu popping up. Plugin is loaded properly tho without errors.

[ManlyMarco]

Check if it shows up on the desktop preview. The game needs to have IMGUI view enabled in some way for it to work, either as desktop-only or rendered to a camera. A lot of games are probably not going to have anything set up here.

[v0idp]

I did check the desktop preview. sadly no menu in there either

[andrewpros]

Anyone found a solution? I do know the UnityExplorer plugin somehow, but works.

[ManlyMarco]

UnityExplorer is visible because it uses a canvas for its interface instead of imgui.

[andrewpros]

Hmm, im not into the internals that much, does that mean the plug-in OnGUI and Update needs to work? And some games will just not call OnGUI?

[ManlyMarco]

The issue is that there is nothing to draw the UI to. I believe it's not possible to draw directly in the VR view, but it is possible to draw to the desktop preview camera and to a texture. I used the second way to enable plugins using OnGUI to be visible in VR on the desktop view tool in this mod https://github.com/IllusionMods/KKS_VR, but it relies on OpenXR which won't help here. I have some games that come with the first version working out of the box too, so it's definitely possible, I think it's a camera mask issue in this case.

[andrewpros]

Well ok, i guess legacy unity GUI is outdated anyway, that why it wont work with vr and there not much to do about it.

[v0idp]

from my knowledge it is possible to draw imgui elements into VR. there is actually a fork of imgui for vr called imguivr or something which allows you to draw imgui overlays in all vr games. it uses openVR.

github: https://github.com/temcgraw/ImguiVR
demo: https://www.youtube.com/watch?v=nlwfn4HJw5E

[andrewpros]

Hmm, are we still talking about the same things and what it has to do with making RuntimeUnityEditor work in vr unity apps?

RuntimeUnityEditor is using unity IMGUI and this has nothing to do with c++ dear imgui.

IMGUI is basically the OnGUI event, at the same time IMGUI does not work with vr and it is kinda obsolete now so it will never in a official way.

But, maybe there is some hack to make it work or at least display on the desktop window without rewriting the whole thing...

Cuz i have heard that some vr games do display it still, but only on the desktop view, but im not sure how this is achieved.

But maybe some hacks are possible, like render the OnGui calls to a texture?

[v0idp]

maybe the texture thing might work, you could draw a plane/cube or whatever into the game and put imgui as a texture on it

[andrewpros]

Its hard to find any info about it, no one cares really, and as it is legacy ui i wont look for it either, no point probably, it works in the vr app i tested, but op didn't specify what game it was, so i was curious.

[v0idp]

The Game was VirtuosoVR I believe.

[andrewpros]

Works for me.

[v0idp]

welp then I forgot... sorry